@@ -667,7 +667,10 @@ static u32 tcpm_get_current_limit(struct tcpm_port *port)
break;
case TYPEC_CC_RP_DEF:
default:
- limit = 0;
+ if (port->tcpc->get_current_limit)
+ limit = port->tcpc->get_current_limit(port->tcpc);
+ else
+ limit = 0;
break;
}
@@ -109,6 +109,13 @@ struct tcpc_dev {
int (*init)(struct tcpc_dev *dev);
int (*get_vbus)(struct tcpc_dev *dev);
+ /*
+ * This optional callback gets called by the tcpm core when configured
+ * as a snk and cc=Rp-def. This allows the tcpm to provide a fallback
+ * current-limit detection method for the cc=Rp-def case. E.g. some
+ * tcpcs may include BC1.2 charger detection and use that in this case.
+ */
+ int (*get_current_limit)(struct tcpc_dev *dev);
int (*set_cc)(struct tcpc_dev *dev, enum typec_cc_status cc);
int (*get_cc)(struct tcpc_dev *dev, enum typec_cc_status *cc1,
enum typec_cc_status *cc2);